Actually Iron Maiden Has Sold 10 Million More Albums then Pearl Jam has and Iron Maiden has never had a proper US Debute. Iron Maiden Has Not Only participated But Headlined in every Important Festival like Gods of metal, Reading and Leeds Festival, Monsters of rock, Download Festival, Rock In Rio, and Rock Am Ring. and Iron maiden is one of the most Influential bands ever. When Iron maiden was anounced as the headliner band for ozzfest Ticket sells boosted to sell out every concert in advance. untill that problem they had in san bernandino CA. Performing in front of 255,000 people in brazil ain't no walk in the park.

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soo without a doubt in my mind Iron maiden is simply greater. UP THE IRONS

Up the irons man!!! thats all i can say

MAiden !***** rules!!!!!!!!!!!!!!!!!